"'Anything that requires human expertise, where you would value the opinion of your neighbor, your friend, your mentor, people you trust in different contexts -- that's the real opportunity,' Horowitz said."--infoworld.com

Though Google might be the search engine king, Yahoo! plans to challenge it. While traditional searches are based on navigation, Yahoo! is trying to add a human element to searches. For example, del.icio.us is a social bookmarking service wherein an individual can discover what fellow users find interesting.